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RISEffects of Ethanol, n-Butanol, and n-Pentanol Addition to Diesel Fuel on Combustion and Emission Characteristics in a Common-Rail Diesel Engine with Exhaust-Gas Recirculation
Publisher: ASCE
Abstract: The study aims to evaluate the combined effects of alcohols as additives to diesel and exhaust-gas recirculation (EGR) on combustion and emission characteristics of a common-rail diesel engine. Tested fuels were prepared ...
Improved Partial Linearization Algorithm for Solving the Combined Travel-Destination-Mode-Route Choice Problem
Publisher: American Society of Civil Engineers
Abstract: Combined travel demand models (CTDM) that integrate trip generation, trip distribution, modal split, and traffic assignment have been developed to resolve the inconsistency problem between the level-of-service and flow ...
Comparing Driver Information Systems in a Dynamic Modeling Framework
Publisher: American Society of Civil Engineers
Abstract: A modeling framework is developed to assess the performance of driver information systems. The two main components of the framework are a route choice module and a traffic simulation module. In the route choice module, ...
Gust Energy Harvesting of a Free-Flying Aircraft Model by CFD/CSD Simulation and Wind Tunnel Testing
Publisher: ASCE
Abstract: The purpose of this study was to investigate the energy-harvesting performance of a piezoelectric free-flying aircraft model under discrete gust. A fluid-structure-electric coupled simulation framework was established by ...
Surface Settlement Control in the Excavation of a Shallow Intersection between a Double-Arched Tunnel and a Connection Tunnel
Publisher: ASCE
Abstract: Ground surface settlement induced by shallow tunnel construction is inevitable, and it is more complicated at the intersection area since the rock behavior is a complex, three-dimensional problem. This paper presented a ...
Model Order Reduction of 1D Diffusion Systems Via Residue Grouping
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A model order reduction method is developed and applied to 1D diffusion systems with negative real eigenvalues. Spatially distributed residues are found either analytically (from a transcendental ...
Two-Phase Flow Maldistribution and Mitigation in Polymer Electrolyte Fuel Cells
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flow maldistribution among polymer electrolyte fuel-cell (PEFC) channels is of concern because this leads to nonuniform distributions of fuel and oxidizer, which in turn result in nonuniform ...
Failure Mechanism of Primary Support for a Shallow and Asymmetrically Loaded Tunnel Portal and Treatment Measures
Publisher: ASCE
Abstract: Shallow and asymmetrically loaded tunnels are very common in mountain tunnel portals, and localized excessive deformation, cracking, or even collapse often occur during the construction process. In this study, a shallow ...
Nonlinear Aeroelastic Response Analysis of Wing with Flared Folding Wingtip
Publisher: ASCE
Abstract: The use of flared folding wingtip (FFWT) for load alleviation has been considered in recent studies. Most studies analyzed FFWT based on the linear assumption and ignored the nonlinearity of large wingtip folding angle. ...
An Explicit Solution of Modal-Damping Ratios for Higher Modes of a Cable with an External Damper
Publisher: ASCE
Abstract: Design of external dampers for stay cables requires repetitive evaluation of damping ratios for target modes of cables under various damper parameters and installation positions, and explicit formulas with high accuracy ...